2 * draw.c -- drawing routines for XBoard
4 * Copyright 1991 by Digital Equipment Corporation, Maynard,
7 * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
8 * 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
10 * The following terms apply to Digital Equipment Corporation's copyright
12 * ------------------------------------------------------------------------
15 * Permission to use, copy, modify, and distribute this software and its
16 * documentation for any purpose and without fee is hereby granted,
17 * provided that the above copyright notice appear in all copies and that
18 * both that copyright notice and this permission notice appear in
19 * supporting documentation, and that the name of Digital not be
20 * used in advertising or publicity pertaining to distribution of the
21 * software without specific, written prior permission.
23 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
24 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
25 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
26 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
27 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
28 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
30 * ------------------------------------------------------------------------
32 * The following terms apply to the enhanced version of XBoard
33 * distributed by the Free Software Foundation:
34 * ------------------------------------------------------------------------
36 * GNU XBoard is free software: you can redistribute it and/or modify
37 * it under the terms of the GNU General Public License as published by
38 * the Free Software Foundation, either version 3 of the License, or (at
39 * your option) any later version.
41 * GNU XBoard is distributed in the hope that it will be useful, but
42 * WITHOUT ANY WARRANTY; without even the implied warranty of
43 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
44 * General Public License for more details.
46 * You should have received a copy of the GNU General Public License
47 * along with this program. If not, see http://www.gnu.org/licenses/. *
49 *------------------------------------------------------------------------
50 ** See the file ChangeLog for a revision history. */
56 #include <cairo/cairo.h>
57 #include <cairo/cairo-xlib.h>
58 #include <librsvg/rsvg.h>
59 #include <librsvg/rsvg-cairo.h>
64 #else /* not STDC_HEADERS */
65 extern char *getenv();
68 # else /* not HAVE_STRING_H */
70 # endif /* not HAVE_STRING_H */
71 #endif /* not STDC_HEADERS */
78 // [HGM] bitmaps: put before incuding the bitmaps / pixmaps, to know how many piece types there are.
82 #include "pixmaps/pixmaps.h"
84 #include "bitmaps/bitmaps.h"
89 #include "xevalgraph.h"
101 #define usleep(t) _sleep2(((t)+500)/1000)
105 # define _(s) gettext (s)
106 # define N_(s) gettext_noop (s)
114 Boolean cairoAnimate;
116 cairo_surface_t *csBoardWindow;
117 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
118 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
119 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
120 static cairo_surface_t *pngBoardBitmap[2];
121 int useTexture, textureW[2], textureH[2];
123 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
124 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
126 #define White(piece) ((int)(piece) < (int)BlackPawn)
130 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
138 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
139 csBoardWindow = DRAWABLE(currBoard);
142 #define BoardSize int
144 InitDrawingSizes (BoardSize boardSize, int flags)
145 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
146 int boardWidth, boardHeight;
148 static int oldWidth, oldHeight;
149 static VariantClass oldVariant;
150 static int oldMono = -1, oldTwoBoards = 0;
151 extern Widget formWidget;
153 if(!formWidget) return;
155 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
156 oldTwoBoards = twoBoards;
158 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
159 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
160 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
162 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
164 oldWidth = boardWidth; oldHeight = boardHeight;
168 * Inhibit shell resizing.
170 ResizeBoardWindow(boardWidth, boardHeight, 0);
175 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
178 if(gameInfo.variant != oldVariant) { // and only if variant changed
182 for(p=0; p<=(int)WhiteKing; p++)
183 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
184 if(gameInfo.variant == VariantShogi) {
185 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
186 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
187 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
188 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
189 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
192 if(gameInfo.variant == VariantGothic) {
193 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
196 if(gameInfo.variant == VariantSChess) {
197 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
198 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
201 oldMono = -10; // kludge to force recreation of animation masks
202 oldVariant = gameInfo.variant;
205 oldMono = appData.monoMode;
209 CreatePNGBoard (char *s, int kind)
211 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
212 if(strstr(s, ".png")) {
213 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
215 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
216 textureW[kind] = cairo_image_surface_get_width (img);
217 textureH[kind] = cairo_image_surface_get_height (img);
222 char *pngPieceNames[] = // must be in same order as internal piece encoding
223 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
224 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
225 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
229 ConvertPixmap (int color, int piece)
231 int i, j, stride, f, colcode[10], w, b;
233 cairo_surface_t *res;
234 XpmPieces *p = builtInXpms + 10;
235 char **pixels = p->xpm[piece % BlackPawn][2*color];
237 sscanf(pixels[0], "%*d %*d %d", &f);
238 sscanf(appData.whitePieceColor+1, "%x", &w);
239 sscanf(appData.blackPieceColor+1, "%x", &b);
240 res = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, p->size, p->size);
241 stride = cairo_image_surface_get_stride(res);
242 buf = (int *) cairo_image_surface_get_data(res);
244 ch[i] = pixels[i+1][0];
246 if(strstr(pixels[i+1], "black")) colcode[i] = 0xFF000000; // 0xFF000000 + (color ? b : 0);
247 if(strstr(pixels[i+1], "white")) colcode[i] = 0xFFFFFFCC; // 0xFF000000 + w;
249 for(i=0; i<p->size; i++) {
250 for(j=0; j<p->size; j++) {
251 char c = pixels[i+f+1][j];
253 for(k=0; ch[k] != c && k < f; k++);
254 buf[i*p->size + j] = colcode[k];
257 cairo_surface_mark_dirty(res);
262 ScaleOnePiece (char *name, int color, int piece)
266 RsvgHandle *svg=NULL;
267 RsvgDimensionData svg_dimensions;
268 GError **svgerror=NULL;
269 cairo_surface_t *img, *cs;
271 int stride = squareSize * 4;
276 if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it
277 if(!*appData.pngDirectory) img = ConvertPixmap(color, piece); else {
278 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]);
280 svg = rsvg_handle_new ();
281 svg = rsvg_handle_new_from_file(buf,svgerror);
283 rsvg_handle_get_dimensions(svg, &svg_dimensions);
285 unsigned char* cairo_data =(unsigned char *) calloc(stride * squareSize, 1);
286 img = cairo_image_surface_create_for_data(cairo_data, CAIRO_FORMAT_ARGB32, squareSize, squareSize, stride);
288 cairo_t *cr_svg = cairo_create(img);
290 scale = (double) squareSize/(double) svg_dimensions.height;
291 cairo_scale(cr_svg, scale,scale);
292 cairo_set_antialias (cr_svg, CAIRO_ANTIALIAS_NONE);
293 rsvg_handle_render_cairo(svg, cr_svg);
295 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) img = ConvertPixmap(color, piece);
297 rsvg_handle_close (svg,NULL);
300 pngPieceImages[color][piece] = img;
303 // create new bitmap to hold scaled piece image (and remove any old)
304 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
305 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
306 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
308 // scaled copying of the raw png image
309 cr = cairo_create(cs);
310 w = cairo_image_surface_get_width (img);
311 h = cairo_image_surface_get_height (img);
312 cairo_scale(cr, squareSize/w, squareSize/h);
313 cairo_set_source_surface (cr, img, 0, 0);
317 { // operate on bitmap to color it (king-size hack...)
318 int stride = cairo_image_surface_get_stride(cs)/4;
319 int *buf = (int *) cairo_image_surface_get_data(cs);
321 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
322 cairo_surface_flush(cs);
323 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
326 unsigned int c = buf[i*stride + j];
327 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
328 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
329 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
330 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
331 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
333 cairo_surface_mark_dirty(cs);
342 for(p=0; pngPieceNames[p]; p++) {
343 ScaleOnePiece(pngPieceNames[p], 0, p);
344 ScaleOnePiece(pngPieceNames[p], 1, p);
350 { // [HGM] taken out of main
352 CreatePNGBoard(appData.liteBackTextureFile, 1);
353 CreatePNGBoard(appData.darkBackTextureFile, 0);
357 InitDrawingParams (int reloadPieces)
362 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
363 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
364 pngPieceImages[i][p] = NULL;
369 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
372 Color (char *col, int n)
375 sscanf(col, "#%x", &c);
381 SetPen (cairo_t *cr, float w, char *col, int dash)
383 static const double dotted[] = {4.0, 4.0};
384 static int len = sizeof(dotted) / sizeof(dotted[0]);
385 cairo_set_line_width (cr, w);
386 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
387 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
390 void DrawSeekAxis( int x, int y, int xTo, int yTo )
395 cr = cairo_create (csBoardWindow);
397 cairo_move_to (cr, x, y);
398 cairo_line_to(cr, xTo, yTo );
400 SetPen(cr, 2, "#000000", 0);
405 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
408 void DrawSeekBackground( int left, int top, int right, int bottom )
410 cairo_t *cr = cairo_create (csBoardWindow);
412 cairo_rectangle (cr, left, top, right-left, bottom-top);
414 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
419 GraphExpose(currBoard, left, top, right-left, bottom-top);
422 void DrawSeekText(char *buf, int x, int y)
424 cairo_t *cr = cairo_create (csBoardWindow);
426 cairo_select_font_face (cr, "Sans",
427 CAIRO_FONT_SLANT_NORMAL,
428 CAIRO_FONT_WEIGHT_NORMAL);
430 cairo_set_font_size (cr, 12.0);
432 cairo_move_to (cr, x, y+4);
433 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
434 cairo_show_text( cr, buf);
438 GraphExpose(currBoard, x-5, y-10, 60, 15);
441 void DrawSeekDot(int x, int y, int colorNr)
443 cairo_t *cr = cairo_create (csBoardWindow);
444 int square = colorNr & 0x80;
448 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
450 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
452 SetPen(cr, 2, "#000000", 0);
453 cairo_stroke_preserve(cr);
455 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
456 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
457 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
463 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
467 InitDrawingHandle (Option *opt)
469 csBoardWindow = DRAWABLE(opt);
477 if (lineGap == 0) return;
479 /* [HR] Split this into 2 loops for non-square boards. */
481 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
482 gridSegments[i].x1 = 0;
484 lineGap + BOARD_WIDTH * (squareSize + lineGap);
485 gridSegments[i].y1 = gridSegments[i].y2
486 = lineGap / 2 + (i * (squareSize + lineGap));
489 for (j = 0; j < BOARD_WIDTH + 1; j++) {
490 gridSegments[j + i].y1 = 0;
491 gridSegments[j + i].y2 =
492 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
493 gridSegments[j + i].x1 = gridSegments[j + i].x2
494 = lineGap / 2 + (j * (squareSize + lineGap));
501 /* draws a grid starting around Nx, Ny squares starting at x,y */
506 cr = cairo_create (csBoardWindow);
508 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
509 SetPen(cr, lineGap, "#000000", 0);
512 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
514 cairo_move_to (cr, gridSegments[i].x1, gridSegments[i].y1);
515 cairo_line_to (cr, gridSegments[i].x2, gridSegments[i].y2);
526 DrawBorder (int x, int y, int type)
532 case 0: col = "#000000"; break;
533 case 1: col = appData.highlightSquareColor; break;
534 case 2: col = appData.premoveHighlightColor; break;
536 cr = cairo_create(csBoardWindow);
537 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
538 cairo_rectangle(cr, x, y, squareSize+lineGap, squareSize+lineGap);
539 SetPen(cr, lineGap, col, 0);
542 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap, squareSize+2*lineGap);
546 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
548 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
549 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
551 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
552 if(textureW[kind] < W*squareSize)
553 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
555 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
556 if(textureH[kind] < H*squareSize)
557 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
559 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
564 DrawLogo (Option *opt, void *logo)
566 cairo_surface_t *img;
570 if(!logo || !opt) return;
571 img = cairo_image_surface_create_from_png (logo);
572 w = cairo_image_surface_get_width (img);
573 h = cairo_image_surface_get_height (img);
574 cr = cairo_create(DRAWABLE(opt));
575 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
576 cairo_set_source_surface (cr, img, 0, 0);
579 cairo_surface_destroy (img);
580 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
584 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
585 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
589 cr = cairo_create (dest);
591 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
592 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
593 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
594 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
597 } else { // evenly colored squares
600 case 0: col = appData.darkSquareColor; break;
601 case 1: col = appData.lightSquareColor; break;
602 case 2: col = "#000000"; break;
604 SetPen(cr, 2.0, col, 0);
605 cairo_rectangle (cr, x, y, squareSize, squareSize);
612 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
617 if ((int)piece < (int) BlackPawn) {
623 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
624 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
625 cr = cairo_create (dest);
626 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
632 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
636 cr = cairo_create(cs);
637 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
638 if(appData.monoMode) {
639 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
640 cairo_stroke_preserve(cr);
641 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
643 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
651 DrawDot (int marker, int x, int y, int r)
652 { // used for atomic captures; no need to draw on backup
653 DoDrawDot(csBoardWindow, marker, x, y, r);
657 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
658 { // basic front-end board-draw function: takes care of everything that can be in square:
659 // piece, background, coordinate/count, marker dot
662 if (piece == EmptySquare) {
663 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
665 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
668 if(align) { // square carries inscription (coord or piece count)
670 cairo_text_extents_t te;
672 cr = cairo_create (csBoardWindow);
673 cairo_select_font_face (cr, "Sans",
674 CAIRO_FONT_SLANT_NORMAL,
675 CAIRO_FONT_WEIGHT_BOLD);
677 cairo_set_font_size (cr, squareSize/4);
678 // calculate where it goes
679 cairo_text_extents (cr, string, &te);
682 xx += squareSize - te.width - te.x_bearing - 1;
683 yy += squareSize - te.height - te.y_bearing - 1;
684 } else if (align == 2) {
685 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
686 } else if (align == 3) {
687 xx += squareSize - te.width -te.x_bearing - 1;
688 yy += -te.y_bearing + 3;
689 } else if (align == 4) {
690 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
693 cairo_move_to (cr, xx-1, yy);
694 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
695 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
696 cairo_show_text (cr, string);
700 if(marker) { // print fat marker dot, if requested
701 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
705 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
707 /* Masks for XPM pieces. Black and white pieces can have
708 different shapes, but in the interest of retaining my
709 sanity pieces must have the same outline on both light
710 and dark squares, and all pieces must use the same
711 background square colors/images. */
713 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
716 InitAnimState (AnimNr anr)
718 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
719 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
720 c_animBufs[anr+4] = csBoardWindow;
721 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
722 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
729 InitAnimState(Player);
733 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
735 static cairo_t *pieceSource;
736 pieceSource = cairo_create (dest);
737 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
738 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
739 else cairo_paint(pieceSource);
740 cairo_destroy (pieceSource);
744 InsertPiece (AnimNr anr, ChessSquare piece)
746 CairoOverlayPiece(piece, c_animBufs[anr]);
750 DrawBlank (AnimNr anr, int x, int y, int startColor)
752 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
755 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
756 int srcX, int srcY, int width, int height, int destX, int destY)
758 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
759 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
760 cairo_rectangle (cr, destX, destY, width, height);
763 if(c_animBufs[anr+destBuf] == csBoardWindow)
764 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
768 SetDragPiece (AnimNr anr, ChessSquare piece)
772 /* [AS] Arrow highlighting support */
775 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
779 cr = cairo_create (cs);
780 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
782 cairo_line_to(cr, arrow[i].x, arrow[i].y);
784 if(appData.monoMode) { // should we always outline arrow?
785 cairo_line_to(cr, arrow[0].x, arrow[0].y);
786 SetPen(cr, 2, "#000000", 0);
787 cairo_stroke_preserve(cr);
789 SetPen(cr, 2, appData.highlightSquareColor, 0);
797 DrawPolygon (Pnt arrow[], int nr)
799 DoDrawPolygon(csBoardWindow, arrow, nr);
800 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);